Sabin's Scenario

Sabin floats down the Lete River/Lethe River after getting separated from the others
following the battle with Ultros.

Meet a New Character

Near Old Man's House

36. Beakor/Aepyornis
37. Rhobite/Chippirabbit

Sabin will start his scenario in the overworld, near a house. Go to that
house. A merchant will ride up on a Chocobo. Don't talk to him yet. Instead,
talk to the guy who looks like a ninja. (Default name: Shadow). He decides
to help you reach Narshe. I recommend saying Yes when asked if you want him to
join you.

After Shadow joins you, be sure to save the game often. He wasn't kidding when
he said that he might leave at any time. If he does leave, you can start the game
from the last save point to get him back.

Talk to the merchant (if he's not there, go into the house and then outside
again).
Be sure to stock up on Tonics/Potions and Fenix Downs/Phoenix Downs before you go. Also,
since Shurikens are so cheap, buy as many
Shurikens as you can carry.
Shadow can use
them with his Throw command.
Sprint Shoes will make you walk more quickly.
I highly recommend buying some.

Outside Imperial Base

42. Stray Cat
43. CrassHoppr/Crass Hopper/Nettlehopper

Go to the Base

Leave the old man's house and go all the way east. Then go south through
the forest. Walk onto the patch of desert to arrive at the Imperial Base/Imperial Observation Post.
The enemies that you encounter at the Imperial Base/Imperial Observation Post cannot be encountered
later, so be sure to fight them if you don't want to miss any.

Go south and watch the cut scene. You will meet a new character (default
name: Cyan).

Cyan has the SwdTech/Bushido ability in battle. He knows three
SwdTechs/Bushidos now, and will
learn more as he levels up. To use this ability, allow his meter to
reach the desired number. Technique 1 is Dispatch/Fang, which attacks a single
enemy. Technique 2 is Retort/Sky, which causes Cyan to counterattack the next time he
is attacked. Technique 3 is Slash, which halves a single enemy's HP and inflicts
Seizure/Sap on that enemy.

When Cyan is standing in front of the castle, go south and
talk to the soldier wearing dark armor.

Leader

Cyan should use SwdTech/Bushido 1 on every turn.

After the battle, you will be back in the Imperial Base/Imperial Observation Post. You can leave and
save the game if you wish. Then go back in.

Tent in Base

Kick the Chest:
38. Doberman

Back inside the Base, go into the tent to the right. In order to not miss one
of the monsters in the game, kick the chest. You will fight Doberman.
Otherwise, if you want to skip the battle, hit the chest.
Then open the chest to get a Star Pendant.

Leave the tent and go south to see another cut scene. Afterward, go south
again to see another scene.
Eventually, you will fight Kefka, but all you have to do is hit him once and
he will run away.

Tent in Base

39. Telstar/Satellite

Go into the to the west and open the chests. The chest on the
left contains a monster that is called Telstar/Satellite. If you choose to fight it,
you can win a Green Beret, which is the best helm available at this point in
the game. Fighting Telstar/Satellite also makes it possible to get even more Green Berets
later.

To defeat Telstar/Satellite, have Sabin use normal attacks (using a Blitz would cause
Telstar/Satellite to inflict Berserk status on Sabin), and have Shadow throw Shurikens
at it. If soldiers appear, ignore them and continue attacking Telstar/Satellite.

Imperial Base

40. Soldier/Imperial Soldier
41. Templar

After this, go up to Kefka and try to talk to him. Follow him and try talking
to him again. When you fight him, just use the Fight command and he will
run away again. Check on him once more, and you will have to fight Soldiers
and Templars.

After that battle, watch the cut scene. When you are in control of Cyan, go
north into the castle, go down the stairs, then go south and approach the
Throne Room. After the cut scene, leave the Throne Room and enter
upper-right door, then watch the cut scene.

Go up and talk to Cyan to help him fight.
Help him through several battles until you are riding Magitek armors.
Use the armors to heal yourself during battle.

Go east, then north, fighting battles as you go. After the final battle,
you will automatically exit the base via the north
exit where you first entered.

In the overworld, go across the bridge to the west, then go south and cross
another bridge, then go south into the forest.